You know what would also be awesome, is if you were able to pick out potential targets in the crowd of people. The user could set a threshold of how many levels above and below his combat level he wants, and the script could highlight people who fit inside that threshold. If OSBot had an API Function that grabs what other players are wearing, you could even add in a feature that discounts players who are wearing really OP melee gear.
For example, if someone was wearing Full Bandos Armor and a Fury and Dragon boots and Dragonfire shield with a whip, and you were only wearing green dragonhide with a magic bow, it wouldn't highlight that player because his gear is too good.
Hope these suggestions are helpful.